On 11/25/2015 11:29 AM, Semyon Enskiy wrote: >>> Maybe assemble command should include sdj3 device too? >>> Like >>> # mdadm -v --assemble --update=revert-reshape /dev/md3 /dev/sd[a-j]3 >>> not >>> # mdadm -v --assemble --update=revert-reshape /dev/md3 /dev/sd[a-i]3 >> >> Yes, my mistake. :-( Try again, including 'sdj3'. >> >> Phil > > # mdadm -v --assemble --update=revert-reshape /dev/md3 /dev/sd[a-j]3 > mdadm: looking for devices for /dev/md3 > mdadm: superblock on /dev/sdj3 doesn't match others - assembly aborted > > # mdadm -v --assemble --update=revert-reshape --force /dev/md3 /dev/sd[a-j]3 > mdadm: looking for devices for /dev/md3 > mdadm: superblock on /dev/sdj3 doesn't match others - assembly aborted > > Note, that --examine in previous message shows delta devices value "-1" for > all members of array, excepting sdj3, which has value "1", without minus > symbol. Hmmm. That's interesting. That means mdadm wrote the revert-reshape before it finished assembly. Try this: mdadm --stop /dev/md3 mdadm --assemble --update=revert-reshape /dev/md3 /dev/sdj3 That should fail w/ not enough to start, but apply the revert to that one drive. Then --stop again, and try with [a-j]. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html